Interaction between an Anionic Polysaccharide and an Oppositely Charged Surfactant. Quasi Elastic Light Scattering, Size Exclusion Chromatography, and Capillary Electrophoresis Study of the Sodium Hyaluronate/Tetradecyltrimethylammonium Bromide/Sodium Chloride/Water System

The interaction between the anionic polysaccharide sodium hyaluronate (NaHy) and the positively charged surfactant tetradecyltrimethylammonium bromide (TTAB) in water leads to phase separation if an insufficient amount of salt (NaCl in this study) is added. With increasing TTAB concentration a prono...

Full description

Saved in:
Bibliographic Details
Published in:Langmuir 1996-10, Vol.12 (20), p.4628-4637
Main Authors: Herslöf-Björling, Åsa, Sundelöf, Lars-Olof, Porsch, Bedřich, Valtcheva, Ludmila, Hjertén, Stellan
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Ionization properties
Organic polymers
Physicochemistry of polymers
Properties and characterization
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The interaction between the anionic polysaccharide sodium hyaluronate (NaHy) and the positively charged surfactant tetradecyltrimethylammonium bromide (TTAB) in water leads to phase separation if an insufficient amount of salt (NaCl in this study) is added. With increasing TTAB concentration a pronounced interaction remains even under single-phase conditions. This is experimentally supported by a lowered relative viscosity, a decreased electrophoretic mobility as determined by high performance capillary electrophoresis (HPCE) approaching zero mobility at infinite TTAB concentrations, and changes in hydrodynamic size as well as an increased relative scattered intensity as determined by quasi elastic light scattering (QELS). The extent of this interaction is controlled mainly by the ionic strength of the solution and by the concentration of surfactant. The data obtained are reasonably explained by the model developed in interaction studies of a positively charged polymer with a negatively charged surfactant.
ISSN:0743-7463
1520-5827
DOI:10.1021/la950222o